We have something different today: A crossover between The Big Switch and The Carbon Copy. If you like this episode, go over to The Carbon Copy and hit subscribe.  When Covid disrupted the economy and shifted energy use, it sharply brought down economy-wide carbon emissions. Many wondered: would the pandemic-related changes to our energy system help or hurt the path to a net-zero carbon economy? Two years later, we have clearer data: a new report from the Rhodium Group on how emissions from fossil fuels have shifted since the pandemic started. In some cases, they've roared back faster than expected. Today: what the latest emissions data tells us about what has shifted -- and what hasn't -- across America's carbon-dependent economy. The Big Switch is produced by Columbia University's Center on Global Energy Policy in partnership with Post Script Media. This episode was produced by Jaime Kaiser and Daniel Woldorff. Theme music and mixing by Sean Marquand. A special thanks to Natalie Volk, Kirsten Smith and Kyu Lee. Our executive editor was Stephen Lacey.